./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label07.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6eeba0e1c333b0671bbfcf3662adf7139859c1a965a716dd9b28c849af19818 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:30:44,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:30:45,023 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:30:45,027 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:30:45,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:30:45,066 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:30:45,067 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:30:45,067 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:30:45,068 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:30:45,068 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:30:45,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:30:45,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:30:45,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:30:45,071 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:30:45,072 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:30:45,072 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:30:45,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:30:45,073 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:30:45,073 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:30:45,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:30:45,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:30:45,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:30:45,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:30:45,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:30:45,079 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:30:45,079 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:30:45,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:30:45,080 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:30:45,080 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:30:45,080 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:30:45,080 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:30:45,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:30:45,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:30:45,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:30:45,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:30:45,082 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:30:45,082 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:30:45,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:30:45,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:30:45,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:30:45,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:30:45,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:30:45,088 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6eeba0e1c333b0671bbfcf3662adf7139859c1a965a716dd9b28c849af19818 [2024-11-09 19:30:45,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:30:45,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:30:45,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:30:45,353 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:30:45,354 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:30:45,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label07.c [2024-11-09 19:30:46,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:30:47,339 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:30:47,341 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label07.c [2024-11-09 19:30:47,374 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/900a27964/f449030f6b604d2c975e3d07082e8b86/FLAGe67d81e26 [2024-11-09 19:30:47,390 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/900a27964/f449030f6b604d2c975e3d07082e8b86 [2024-11-09 19:30:47,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:30:47,395 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:30:47,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:30:47,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:30:47,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:30:47,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:30:47" (1/1) ... [2024-11-09 19:30:47,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67691d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:47, skipping insertion in model container [2024-11-09 19:30:47,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:30:47" (1/1) ... [2024-11-09 19:30:47,524 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:30:47,867 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label07.c[3249,3262] [2024-11-09 19:30:48,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:30:48,665 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:30:48,684 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label07.c[3249,3262] [2024-11-09 19:30:49,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:30:49,169 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:30:49,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49 WrapperNode [2024-11-09 19:30:49,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:30:49,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:30:49,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:30:49,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:30:49,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (1/1) ... [2024-11-09 19:30:49,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (1/1) ... [2024-11-09 19:30:49,705 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-09 19:30:49,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:30:49,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:30:49,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:30:49,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:30:49,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (1/1) ... [2024-11-09 19:30:49,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (1/1) ... [2024-11-09 19:30:49,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (1/1) ... [2024-11-09 19:30:50,198 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 19:30:50,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (1/1) ... [2024-11-09 19:30:50,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (1/1) ... [2024-11-09 19:30:50,501 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (1/1) ... [2024-11-09 19:30:50,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (1/1) ... [2024-11-09 19:30:50,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (1/1) ... [2024-11-09 19:30:50,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (1/1) ... [2024-11-09 19:30:50,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:30:50,645 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:30:50,645 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:30:50,646 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:30:50,647 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (1/1) ... [2024-11-09 19:30:50,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:30:50,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:30:50,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:30:50,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 19:30:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:30:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:30:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:30:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:30:50,807 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:30:50,809 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:30:57,187 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-09 19:30:57,188 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:30:57,190 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:30:57,529 INFO L? ?]: Removed 2111 outVars from TransFormulas that were not future-live. [2024-11-09 19:30:57,529 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:30:57,565 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:30:57,566 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:30:57,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:30:57 BoogieIcfgContainer [2024-11-09 19:30:57,566 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:30:57,571 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:30:57,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:30:57,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:30:57,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:30:47" (1/3) ... [2024-11-09 19:30:57,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da287ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:30:57, skipping insertion in model container [2024-11-09 19:30:57,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:49" (2/3) ... [2024-11-09 19:30:57,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da287ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:30:57, skipping insertion in model container [2024-11-09 19:30:57,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:30:57" (3/3) ... [2024-11-09 19:30:57,580 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label07.c [2024-11-09 19:30:57,597 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:30:57,598 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:30:57,705 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:30:57,714 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e2e2f31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:30:57,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:30:57,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 1099 states have (on average 2.4767970882620562) internal successors, (2722), 1100 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 19:30:57,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:57,733 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:30:57,733 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:57,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:57,739 INFO L85 PathProgramCache]: Analyzing trace with hash 121008611, now seen corresponding path program 1 times [2024-11-09 19:30:57,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:57,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047457087] [2024-11-09 19:30:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:57,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:30:58,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:58,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047457087] [2024-11-09 19:30:58,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047457087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:58,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:58,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:30:58,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357991288] [2024-11-09 19:30:58,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:58,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:30:58,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:58,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:30:58,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:58,082 INFO L87 Difference]: Start difference. First operand has 1101 states, 1099 states have (on average 2.4767970882620562) internal successors, (2722), 1100 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:03,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:03,190 INFO L93 Difference]: Finished difference Result 3041 states and 7797 transitions. [2024-11-09 19:31:03,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:03,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 19:31:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:03,219 INFO L225 Difference]: With dead ends: 3041 [2024-11-09 19:31:03,219 INFO L226 Difference]: Without dead ends: 1876 [2024-11-09 19:31:03,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:03,231 INFO L432 NwaCegarLoop]: 990 mSDtfsCounter, 1600 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 3937 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 4795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 3937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:03,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 1146 Invalid, 4795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 3937 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-09 19:31:03,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2024-11-09 19:31:03,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1862. [2024-11-09 19:31:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 2.3127350886620097) internal successors, (4304), 1861 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 4304 transitions. [2024-11-09 19:31:03,347 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 4304 transitions. Word has length 23 [2024-11-09 19:31:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:03,348 INFO L471 AbstractCegarLoop]: Abstraction has 1862 states and 4304 transitions. [2024-11-09 19:31:03,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:03,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 4304 transitions. [2024-11-09 19:31:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 19:31:03,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:03,353 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:31:03,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:31:03,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:03,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:03,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1608782627, now seen corresponding path program 1 times [2024-11-09 19:31:03,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:03,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277147368] [2024-11-09 19:31:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:03,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:31:03,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277147368] [2024-11-09 19:31:03,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277147368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:03,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:03,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:31:03,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347054104] [2024-11-09 19:31:03,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:03,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:03,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:03,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:03,634 INFO L87 Difference]: Start difference. First operand 1862 states and 4304 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:09,124 INFO L93 Difference]: Finished difference Result 5413 states and 12708 transitions. [2024-11-09 19:31:09,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:09,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-11-09 19:31:09,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:09,141 INFO L225 Difference]: With dead ends: 5413 [2024-11-09 19:31:09,141 INFO L226 Difference]: Without dead ends: 3553 [2024-11-09 19:31:09,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:09,145 INFO L432 NwaCegarLoop]: 904 mSDtfsCounter, 1580 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4775 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 5217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 4775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:09,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 1038 Invalid, 5217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 4775 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-09 19:31:09,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2024-11-09 19:31:09,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3481. [2024-11-09 19:31:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3481 states, 3480 states have (on average 2.3123563218390806) internal successors, (8047), 3480 states have internal predecessors, (8047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:09,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 8047 transitions. [2024-11-09 19:31:09,237 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 8047 transitions. Word has length 96 [2024-11-09 19:31:09,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:09,238 INFO L471 AbstractCegarLoop]: Abstraction has 3481 states and 8047 transitions. [2024-11-09 19:31:09,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:09,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 8047 transitions. [2024-11-09 19:31:09,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-09 19:31:09,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:09,243 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:31:09,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:31:09,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:09,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:09,244 INFO L85 PathProgramCache]: Analyzing trace with hash -552788215, now seen corresponding path program 1 times [2024-11-09 19:31:09,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:09,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080270063] [2024-11-09 19:31:09,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:09,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:31:09,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:09,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080270063] [2024-11-09 19:31:09,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080270063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:09,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:09,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:31:09,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012262447] [2024-11-09 19:31:09,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:09,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:31:09,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:09,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:31:09,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:31:09,833 INFO L87 Difference]: Start difference. First operand 3481 states and 8047 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:16,161 INFO L93 Difference]: Finished difference Result 10932 states and 25367 transitions. [2024-11-09 19:31:16,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:31:16,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2024-11-09 19:31:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:16,195 INFO L225 Difference]: With dead ends: 10932 [2024-11-09 19:31:16,198 INFO L226 Difference]: Without dead ends: 7453 [2024-11-09 19:31:16,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:31:16,206 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 4739 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 6271 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 7187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 6271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:16,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4739 Valid, 1013 Invalid, 7187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 6271 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-09 19:31:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7453 states. [2024-11-09 19:31:16,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7453 to 7452. [2024-11-09 19:31:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7452 states, 7451 states have (on average 2.2065494564487986) internal successors, (16441), 7451 states have internal predecessors, (16441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 16441 transitions. [2024-11-09 19:31:16,344 INFO L78 Accepts]: Start accepts. Automaton has 7452 states and 16441 transitions. Word has length 110 [2024-11-09 19:31:16,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:16,349 INFO L471 AbstractCegarLoop]: Abstraction has 7452 states and 16441 transitions. [2024-11-09 19:31:16,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:16,350 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states and 16441 transitions. [2024-11-09 19:31:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-09 19:31:16,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:16,353 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:31:16,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:31:16,356 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:16,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1688185968, now seen corresponding path program 1 times [2024-11-09 19:31:16,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:16,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912575949] [2024-11-09 19:31:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:16,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:31:16,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:16,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912575949] [2024-11-09 19:31:16,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912575949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:16,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:16,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:31:16,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733122393] [2024-11-09 19:31:16,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:16,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:16,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:16,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:16,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:16,631 INFO L87 Difference]: Start difference. First operand 7452 states and 16441 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:21,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:21,282 INFO L93 Difference]: Finished difference Result 20448 states and 45869 transitions. [2024-11-09 19:31:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:21,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2024-11-09 19:31:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:21,341 INFO L225 Difference]: With dead ends: 20448 [2024-11-09 19:31:21,341 INFO L226 Difference]: Without dead ends: 13786 [2024-11-09 19:31:21,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:21,355 INFO L432 NwaCegarLoop]: 833 mSDtfsCounter, 1622 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 4000 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 4752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 4000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:21,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 965 Invalid, 4752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 4000 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 19:31:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13786 states. [2024-11-09 19:31:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13786 to 13779. [2024-11-09 19:31:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13779 states, 13778 states have (on average 2.149876614893308) internal successors, (29621), 13778 states have internal predecessors, (29621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:21,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13779 states to 13779 states and 29621 transitions. [2024-11-09 19:31:21,615 INFO L78 Accepts]: Start accepts. Automaton has 13779 states and 29621 transitions. Word has length 192 [2024-11-09 19:31:21,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:21,616 INFO L471 AbstractCegarLoop]: Abstraction has 13779 states and 29621 transitions. [2024-11-09 19:31:21,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 13779 states and 29621 transitions. [2024-11-09 19:31:21,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-09 19:31:21,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:21,624 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:31:21,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:31:21,625 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:21,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:21,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1306774398, now seen corresponding path program 1 times [2024-11-09 19:31:21,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:21,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558905251] [2024-11-09 19:31:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:21,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:31:21,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:21,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558905251] [2024-11-09 19:31:21,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558905251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:21,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:21,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:31:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86643086] [2024-11-09 19:31:21,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:21,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:31:21,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:21,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:31:21,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:31:21,851 INFO L87 Difference]: Start difference. First operand 13779 states and 29621 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:29,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:29,256 INFO L93 Difference]: Finished difference Result 39594 states and 86211 transitions. [2024-11-09 19:31:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:31:29,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2024-11-09 19:31:29,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:29,319 INFO L225 Difference]: With dead ends: 39594 [2024-11-09 19:31:29,320 INFO L226 Difference]: Without dead ends: 26605 [2024-11-09 19:31:29,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:31:29,338 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 3202 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 8706 mSolverCounterSat, 1290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3202 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 9996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1290 IncrementalHoareTripleChecker+Valid, 8706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:29,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3202 Valid, 650 Invalid, 9996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1290 Valid, 8706 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-09 19:31:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2024-11-09 19:31:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 26487. [2024-11-09 19:31:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26487 states, 26486 states have (on average 2.144982254776108) internal successors, (56812), 26486 states have internal predecessors, (56812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26487 states to 26487 states and 56812 transitions. [2024-11-09 19:31:29,916 INFO L78 Accepts]: Start accepts. Automaton has 26487 states and 56812 transitions. Word has length 206 [2024-11-09 19:31:29,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:29,917 INFO L471 AbstractCegarLoop]: Abstraction has 26487 states and 56812 transitions. [2024-11-09 19:31:29,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:29,917 INFO L276 IsEmpty]: Start isEmpty. Operand 26487 states and 56812 transitions. [2024-11-09 19:31:29,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-09 19:31:29,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:29,923 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:31:29,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:31:29,923 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:29,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:29,924 INFO L85 PathProgramCache]: Analyzing trace with hash -6184546, now seen corresponding path program 1 times [2024-11-09 19:31:29,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:29,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870641165] [2024-11-09 19:31:29,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:29,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:31:30,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:30,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870641165] [2024-11-09 19:31:30,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870641165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:30,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:30,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:31:30,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011757665] [2024-11-09 19:31:30,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:30,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:30,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:30,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:30,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:30,191 INFO L87 Difference]: Start difference. First operand 26487 states and 56812 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:34,419 INFO L93 Difference]: Finished difference Result 52165 states and 112095 transitions. [2024-11-09 19:31:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:34,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2024-11-09 19:31:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:34,482 INFO L225 Difference]: With dead ends: 52165 [2024-11-09 19:31:34,483 INFO L226 Difference]: Without dead ends: 26468 [2024-11-09 19:31:34,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:34,512 INFO L432 NwaCegarLoop]: 2241 mSDtfsCounter, 1732 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 3786 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 4382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 3786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:34,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 2385 Invalid, 4382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 3786 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-09 19:31:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26468 states. [2024-11-09 19:31:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26468 to 26461. [2024-11-09 19:31:34,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26461 states, 26460 states have (on average 2.066893424036281) internal successors, (54690), 26460 states have internal predecessors, (54690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26461 states to 26461 states and 54690 transitions. [2024-11-09 19:31:35,042 INFO L78 Accepts]: Start accepts. Automaton has 26461 states and 54690 transitions. Word has length 264 [2024-11-09 19:31:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:35,042 INFO L471 AbstractCegarLoop]: Abstraction has 26461 states and 54690 transitions. [2024-11-09 19:31:35,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 26461 states and 54690 transitions. [2024-11-09 19:31:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-09 19:31:35,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:35,047 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:31:35,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:31:35,047 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:35,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:35,047 INFO L85 PathProgramCache]: Analyzing trace with hash -143856262, now seen corresponding path program 1 times [2024-11-09 19:31:35,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:35,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802254051] [2024-11-09 19:31:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:35,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-09 19:31:35,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:35,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802254051] [2024-11-09 19:31:35,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802254051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:35,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:35,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:31:35,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601795923] [2024-11-09 19:31:35,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:35,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:35,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:35,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:35,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:35,276 INFO L87 Difference]: Start difference. First operand 26461 states and 54690 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:39,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:39,891 INFO L93 Difference]: Finished difference Result 76554 states and 158897 transitions. [2024-11-09 19:31:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:39,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2024-11-09 19:31:39,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:39,982 INFO L225 Difference]: With dead ends: 76554 [2024-11-09 19:31:39,982 INFO L226 Difference]: Without dead ends: 50883 [2024-11-09 19:31:40,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:40,005 INFO L432 NwaCegarLoop]: 979 mSDtfsCounter, 1543 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3835 mSolverCounterSat, 863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 4698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 863 IncrementalHoareTripleChecker+Valid, 3835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:40,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1116 Invalid, 4698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [863 Valid, 3835 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 19:31:40,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50883 states. [2024-11-09 19:31:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50883 to 46145. [2024-11-09 19:31:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46145 states, 46144 states have (on average 2.0283027045769764) internal successors, (93594), 46144 states have internal predecessors, (93594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46145 states to 46145 states and 93594 transitions. [2024-11-09 19:31:40,604 INFO L78 Accepts]: Start accepts. Automaton has 46145 states and 93594 transitions. Word has length 267 [2024-11-09 19:31:40,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:40,605 INFO L471 AbstractCegarLoop]: Abstraction has 46145 states and 93594 transitions. [2024-11-09 19:31:40,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:40,605 INFO L276 IsEmpty]: Start isEmpty. Operand 46145 states and 93594 transitions. [2024-11-09 19:31:40,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-09 19:31:40,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:40,615 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:31:40,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:31:40,615 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:40,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:40,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1248307130, now seen corresponding path program 1 times [2024-11-09 19:31:40,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:40,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167970320] [2024-11-09 19:31:40,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:40,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 19:31:40,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:40,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167970320] [2024-11-09 19:31:40,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167970320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:40,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:40,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:31:40,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605409155] [2024-11-09 19:31:40,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:40,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:40,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:40,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:40,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:40,950 INFO L87 Difference]: Start difference. First operand 46145 states and 93594 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:45,549 INFO L93 Difference]: Finished difference Result 112785 states and 230389 transitions. [2024-11-09 19:31:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 324 [2024-11-09 19:31:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:45,981 INFO L225 Difference]: With dead ends: 112785 [2024-11-09 19:31:45,981 INFO L226 Difference]: Without dead ends: 67430 [2024-11-09 19:31:46,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:46,009 INFO L432 NwaCegarLoop]: 929 mSDtfsCounter, 1498 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 3867 mSolverCounterSat, 865 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 4732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 865 IncrementalHoareTripleChecker+Valid, 3867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:46,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1046 Invalid, 4732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [865 Valid, 3867 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 19:31:46,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67430 states. [2024-11-09 19:31:46,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67430 to 65055. [2024-11-09 19:31:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65055 states, 65054 states have (on average 2.0222738033018723) internal successors, (131557), 65054 states have internal predecessors, (131557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:47,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65055 states to 65055 states and 131557 transitions. [2024-11-09 19:31:47,624 INFO L78 Accepts]: Start accepts. Automaton has 65055 states and 131557 transitions. Word has length 324 [2024-11-09 19:31:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:47,625 INFO L471 AbstractCegarLoop]: Abstraction has 65055 states and 131557 transitions. [2024-11-09 19:31:47,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:47,625 INFO L276 IsEmpty]: Start isEmpty. Operand 65055 states and 131557 transitions. [2024-11-09 19:31:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-09 19:31:47,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:47,633 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:31:47,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:31:47,634 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:47,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:47,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1350075475, now seen corresponding path program 1 times [2024-11-09 19:31:47,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:47,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70649260] [2024-11-09 19:31:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:47,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 318 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 19:31:48,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:48,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70649260] [2024-11-09 19:31:48,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70649260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:31:48,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637686541] [2024-11-09 19:31:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:48,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:31:48,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:31:48,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:31:48,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:31:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:48,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:31:48,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:31:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-09 19:31:49,011 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:31:49,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637686541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:49,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:31:49,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:31:49,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800948172] [2024-11-09 19:31:49,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:49,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:49,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:49,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:49,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:31:49,015 INFO L87 Difference]: Start difference. First operand 65055 states and 131557 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:53,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:53,152 INFO L93 Difference]: Finished difference Result 129318 states and 261602 transitions. [2024-11-09 19:31:53,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:53,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 352 [2024-11-09 19:31:53,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:53,242 INFO L225 Difference]: With dead ends: 129318 [2024-11-09 19:31:53,242 INFO L226 Difference]: Without dead ends: 65053 [2024-11-09 19:31:53,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:31:53,271 INFO L432 NwaCegarLoop]: 2059 mSDtfsCounter, 1800 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 3894 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 4338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 3894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:53,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 2140 Invalid, 4338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 3894 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 19:31:53,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65053 states. [2024-11-09 19:31:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65053 to 65052. [2024-11-09 19:31:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65052 states, 65051 states have (on average 1.9975403913852208) internal successors, (129942), 65051 states have internal predecessors, (129942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:54,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65052 states to 65052 states and 129942 transitions. [2024-11-09 19:31:54,462 INFO L78 Accepts]: Start accepts. Automaton has 65052 states and 129942 transitions. Word has length 352 [2024-11-09 19:31:54,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:54,463 INFO L471 AbstractCegarLoop]: Abstraction has 65052 states and 129942 transitions. [2024-11-09 19:31:54,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:54,463 INFO L276 IsEmpty]: Start isEmpty. Operand 65052 states and 129942 transitions. [2024-11-09 19:31:54,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-09 19:31:54,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:54,469 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:31:54,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:31:54,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:31:54,670 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:54,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:54,670 INFO L85 PathProgramCache]: Analyzing trace with hash 421612171, now seen corresponding path program 1 times [2024-11-09 19:31:54,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:54,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462163175] [2024-11-09 19:31:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:54,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-09 19:31:55,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:55,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462163175] [2024-11-09 19:31:55,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462163175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:55,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:55,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:31:55,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979619728] [2024-11-09 19:31:55,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:55,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:55,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:55,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:55,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:55,131 INFO L87 Difference]: Start difference. First operand 65052 states and 129942 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:32:00,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:32:00,213 INFO L93 Difference]: Finished difference Result 150603 states and 302218 transitions. [2024-11-09 19:32:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:32:00,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2024-11-09 19:32:00,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:32:00,338 INFO L225 Difference]: With dead ends: 150603 [2024-11-09 19:32:00,338 INFO L226 Difference]: Without dead ends: 86341 [2024-11-09 19:32:00,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:32:00,359 INFO L432 NwaCegarLoop]: 846 mSDtfsCounter, 1593 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 3861 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 4788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 3861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:32:00,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 929 Invalid, 4788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 3861 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 19:32:00,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86341 states. [2024-11-09 19:32:01,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86341 to 84749. [2024-11-09 19:32:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84749 states, 84748 states have (on average 2.0026667295983387) internal successors, (169722), 84748 states have internal predecessors, (169722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:32:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84749 states to 84749 states and 169722 transitions. [2024-11-09 19:32:01,630 INFO L78 Accepts]: Start accepts. Automaton has 84749 states and 169722 transitions. Word has length 383 [2024-11-09 19:32:01,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:32:01,631 INFO L471 AbstractCegarLoop]: Abstraction has 84749 states and 169722 transitions. [2024-11-09 19:32:01,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:32:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 84749 states and 169722 transitions. [2024-11-09 19:32:01,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2024-11-09 19:32:01,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:32:01,636 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:32:01,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:32:01,637 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:32:01,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:32:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1535634138, now seen corresponding path program 1 times [2024-11-09 19:32:01,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:32:01,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084244182] [2024-11-09 19:32:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:32:01,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:32:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat